There are varying opinions on this and the evidence for Sabbath observance is a bit on the sketchy side, but a case could probably be made either way.
Seventh-day Adventist Church adheres to worshiping on Saturday, which they observe as the Sabbath day.
The Seventh Day Adventist church is a Protestant Christian denomination who observe the original Sabbath day which is Saturday and not Sunday. They preach many of the same things as other Christians.
Christianity and in that a group called 'Seventh Day Adventist' which the sabbath is their holy day which is Saturday. They do not work / party from friday night to saturday night as a time of rest and reflection to God about the good he has done in their lives
For Judaism Shabbat starts Friday at sundown and ends Saturday at sundown. For Christianity, its Sunday. Islam sabbath begins on Thursday at sunset and ends on Friday at sunset.
Many Christians keep Sabbath on Sunday the first day of the week. The Jewish Sabbath starts Friday at sundown and ends Saturday at sundown, the 7th day of the week. Another View: The majority of Christians observe Sunday, the first day of the week, and may refer to it as 'Sabbath' designating it as a day of rest. Many point to the resurrection of Jesus for the reason for this change from the Biblical Sabbath, the seventh day of the week. The Biblical Sabbath is Saturday, the seventh-day of the week. Jews and over 18 million Christians observe this day. They observe it according to the Biblical commandment from sundown Friday to Saturday at sundown. In over 140 different languages the seventh-day of the week, which we call Saturday, uses the term translated 'Sabbath' or 'rest".
Sunday
Probably, although there was controversy about healing a man on the Sabbath when he was alive.
The official Adventist theological position does not require the observance of any of the feast days but also does not prohibit the observance either. The majority of Adventists do not observe the feast days, but there are some that do.
I don't think it is.
Jews observe the Sabbath from Friday night at sundown, until Saturday night at sundown.
The "true Sabbath", if one wishes to observe it as it was original set out in the Torah, starts Friday sundown and ends Saturday sundown.
Judaism: Shabbat is observed from Friday evening to Saturday evening. Christianity: Typically, Sunday is considered the Sabbath day for most Christian denominations. Islam: Friday is considered a holy day, although it is not technically a Sabbath in the same way as in Judaism or Christianity. Seventh-day Adventists: They observe Sabbath on Saturday, similar to Jewish tradition.